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Method for preparing CuCrZr spherical powder based on VIGA process

A spherical and crafted technology, applied in the field of metal powder metallurgy, can solve complex problems, achieve uniform distribution, small particle size, and reduce the average particle size

Active Publication Date: 2019-11-22
SHAANXI SIRUI ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method of CuCrZr alloy spherical powder designed by the present invention is based on meeting the raw material requirements of metal additive manufacturing, and the VIGA process is used to prepare powder to solve the problem of localization of raw materials for additive manufacturing of advanced copper alloy complex cooling structural parts of aerospace engines.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for preparing CuCrZr spherical powder based on VIGA process, comprising the following steps:

[0027] (1) Smelting according to the ratio of each element and its addition method, and then forging after pouring to obtain a CuCrZr rod blank with a relative density ≥ 90%: according to the mass fraction, the mass fraction of each chemical component in the CuCrZr rod blank The ratio is: Cr: 1.2%; Zr: 0.15%; Cu: balance; CuCrZr rod blank surface has no obvious porosity and shrinkage cavity defects;

[0028] (2) Process CuCrZr alloy bars that meet the feeding size requirements of vacuum induction melting furnaces with sawing machines and lathes: the diameter of CuCrZr alloy bars is 50 mm, the length is 600 mm, and the surface roughness is 1.6 μm;

[0029](3) Place the CuCrZr alloy rod in the furnace crucible to melt it, stir it by electromagnetic induction, pre-vacuumize the whole set of equipment, and then fill it with inert protective gas: put the CuCrZr alloy rod i...

Embodiment 2

[0039] A method for preparing CuCrZr spherical powder based on VIGA process, comprising the following steps:

[0040] (1) Smelting according to the ratio of each element and its addition method, and then forging after pouring to obtain a CuCrZr rod blank with a relative density ≥ 90%: according to the mass fraction, the mass fraction of each chemical component in the CuCrZr rod blank The ratio is: Cr: 0.7%; Zr: 0.065%; Cu: balance; CuCrZr rod blank surface has no obvious porosity and shrinkage cavity defects;

[0041] (2) Process CuCrZr alloy bars that meet the feeding size requirements of vacuum induction melting furnaces with sawing machines and lathes: CuCrZr alloy bars have a diameter of 40 mm, a length of 300 mm, and a surface roughness of ≤ 1.5 μm;

[0042] (3) Place the CuCrZr alloy rod in the furnace crucible to melt it, stir it by electromagnetic induction, pre-vacuumize the whole set of equipment, and then fill it with inert protective gas: put the CuCrZr alloy rod i...

Embodiment 3

[0052] A method for preparing CuCrZr spherical powder based on VIGA process, comprising the following steps:

[0053] (1) Smelting according to the ratio of each element and its addition method, and then forging after pouring to obtain a CuCrZr rod blank with a relative density ≥ 90%: according to the mass fraction, the mass fraction of each chemical component in the CuCrZr rod blank The ratio is: Cr: 1%; Zr: 0.1%; Cu: balance; CuCrZr rod blank surface has no obvious porosity and shrinkage cavity defects;

[0054] (2) Process CuCrZr alloy bars that meet the feeding size requirements of vacuum induction melting furnaces with sawing machines and lathes: the diameter of CuCrZr alloy bars is not greater than 50 mm, the length is 400 mm, and the surface roughness is ≤ 1.6 μm;

[0055] (3) Place the CuCrZr alloy rod in the furnace crucible to melt it, stir it by electromagnetic induction, pre-vacuumize the whole set of equipment, and then fill it with inert protective gas: put the C...

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Abstract

A method for preparing CuCrZr spherical powder based on a VIGA process comprises the following steps that (1) smelting is conducted according to the proportion and adding mode of each element, forgingis performed after pouring, and a CuCrZr bar blank is obtained; (2) a CuCrZr alloy bar stock is processed; (3) the CuCrZr alloy bar stock is placed into a crucible in a furnace for melting and then stirred through electromagnetic induction, pre-vacuumizing treatment is conducted on the whole set of equipment, and then inert protective gas is introduced; (4) the obtained alloy melt is introduced into an atomizing chamber through a guide pipe to be atomized and crushed into a large number of fine liquid drops, and the liquid drops are solidified into spherical powder particles in the flying process; (5) the CuCrZr spherical powder is obtained through a powder collecting device and then sieved and vacuum packaged as required after the powder is completely cooled. According to the preparationmethod of the CuCrZr alloy spherical powder, the powder is prepared by a VIGA process on the basis that the raw material requirements of metal additive manufacturing are met, so that the problem of domestication preparation of additive manufacturing raw materials of advanced copper-alloy complex cooling structural parts of an aerospace engine is solved.

Description

technical field [0001] The invention belongs to the field of metal powder metallurgy and relates to a copper alloy raw material preparation technology suitable for metal additive manufacturing, in particular to a method for preparing CuCrZr spherical powder based on a VIGA process. Background technique [0002] Launcher, an American aerospace start-up engaged in the manufacture and launch of small rockets, tested copper alloy rocket engine components. This is a 3D printed copper alloy (CuCrZr) engine component that integrates complex cooling channels, a design that will improve engine cooling efficiency. In CuCrZr alloys, Cr is the main strengthening element. Cr in the alloy is not only beneficial to prevent the formation of coarse precipitates, but also strengthens the matrix. Zr helps to obtain finer and uniform precipitate particles to increase the strengthening effect and inhibit Cracking along the crystal to increase alloy ductility. CuCrZr alloy is a copper alloy mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08B22F1/00B33Y70/00C22C9/00
CPCB22F9/082C22C9/00B33Y70/00B22F2009/088B22F1/065
Inventor 李小阳庾高峰张航武旭红王文斌马明月吴斌王聪利
Owner SHAANXI SIRUI ADVANCED MATERIALS CO LTD
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